JPS62151085A - Information signal recording disk - Google Patents

Abstract

PURPOSE:To attain the simultaneous cut change of plural pictures when static pictures consolidated with each other are displayed by recording a header signal not accompanied by a bit of static picture information at the reproducing position of a bit of optional static picture information after its reproduction. CONSTITUTION:A digital video signal of one field is constituted with header signals H1-H684, and component coding signals Y1, Y2,...(R-Y)1, (B-Y)1. By reproducing a disk 1, static pictures A1, A2, A3,...A16, and header signals h1, h2, h3,...h16 not accompanied by the component coding data are obtained in order. The picture element data of each of static pictures A1-A16 is written on the second memory in reproducing devices from the first to the sixteenth corresponding to a picture identification code. As for displayed images on the first - the sixteenth screens, a static picture X displayed so far is instantly cut changed to a static picture A by the reproduction of the header signals h1-h16.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an information signal recording disk, and more particularly, to an information signal recording disk in which at least digital video ζ8 in which still image information is accompanied by a header signal is recorded.

Conventional technology Conventionally, an audio signal or an audio signal and a video signal are
Information signal recording disks (hereinafter referred to as ``discs''), in which the signals are digitally modulated and then synthesized in time series and recorded on concentric solid or spiral tracks, for example, as changes in geometric shapes, are also widely used. Are known. This disc is called a digital audio disc because the recorded information is mainly audio signals, and the video signals are mainly still images, which serve as auxiliary information to help people imagine how to listen to the audio signals. ing.

In the recording rack 1 of this digital audio disc, information signals h (digitally modulated, converted into a digital signal form, frequency modulated, etc.) such as audio signals and still image single character data are recorded.

It takes about 2.26 seconds to reproduce one screen worth of still image information from the above disc. The playback device that plays this disc is equipped with two screens of video memory, and after one screen is filled with still images, the still images are read out from one side from the other memory. By switching to the memory of , a cut operation is performed that changes the display screen to an instantaneous display.

Also, while writing a still image to one memory, the still image is read from this one memory to perform a wipe change in which the display screen is gradually rewritten.

Problems to be Solved by the Invention For example, when trying to display uniform still images on 16 screens, the above 16ii! Recording still image information for the ii-screen multi-display is superior to recording on 16 discs because it is simpler in terms of disc production and synchronized operation of the playback device.

However, in conventional disks, the still image information is written to either the first memory or the second memory in the header signal provided for each still image information, and at the same time, the still image is transferred from either memory. A specification code is recorded that specifies whether to read information. For this reason, in conventional discs, if any one of the 16 sides is
It is possible to perform f-cutting, and it is possible to sequentially cut 16 screens. However, it is not possible to manipulate all 16 screens at the same time. Due to the effectiveness of the film, it was required to cut 16 screens at the same time, and there was a problem in that this requirement could not be met.

Therefore, the present invention provides an information signal recording disk that solves the above problems by recording a header signal without still image information at a position where arbitrary still image information is generated after repopulation. With the goal.

Means for Solving the Problems In the disc of the present invention, still image information is recorded at least as a digital video signal accompanied by a header signal. This header signal contains a read-in specification code that specifies which memory to read still image information from among at least two screens worth of memory on the right side of the playback device, and which memory specifies which memory to read still image information from. read specification] -
and is provided. First, if any still image information has a different write designation code and readout designation code,
It is recorded along with a header signal that specifies the After this still image information is played, the position on the disk to be played is a writing designation code for sending a header with arbitrary still image information,
Each readout specification code has a fortune-telling specification code and a readout specification code that specify different numbers from each other,
In addition, a header signal without image information is recorded.

Operation In the present invention, the above-mentioned arbitrary still image information is written into a memory which has not been subjected to 1-pC extraction at this point. After that, when a header signal without still image information is played back, the memory to be read is switched according to the specified code of this header signal, the above-mentioned arbitrary still image information is read out, and the displayed still image is [・Exchange.

Embodiment FIG. 1 shows a schematic track diagram of an embodiment of a disc according to the present invention. In the figure, audio signals and digital video signals of still images are frequency-modulated and recorded on the tracks indicated by solid lines.

As will be described later, a third 1 to racking control reference signal fP3 is recorded at a specific position 2 of one rotation period on the disk 1 for a certain period of time. Tracks t1a to t1b record the digital video signal for one screen of the first screen among 16 screens, the next track t2a to t2b records the digital video signal of the second screen, and the 1st rack t3a to t3b records the digital video signal of the second screen. The digital video signals of the three sides are recorded, and the digital video A signal of the 16th screen is similarly recorded in tracks t1G to t16b.

Next, a recording system for recording the disc 1 will be explained using FIG. 2. In FIG. 2, a digital recorder 4 records digital video signals of a plurality of still images, and the digital recorder 4 reproduces the digital video signals and supplies them to a signal 8 processing circuit 5.

Here, the digital video signal recorded on the digital recorder 4 is a signal 74-mat as shown in FIG. The digital video signal for one field consists of 684 header signals shown in FIG.
l, Y2. ...(RY) 1゜(B-Y) ,・
It is composed of combo screw 1 to seasonal numbering signals indicated by .

First, to explain the encoded signal, the number of scanning lines is 625, and the horizontal scanning frequency is 15.625 k.
Of the color video signal for one frame of Hz, only the video period signal is the luminance signal, as mentioned above, the sampling frequency is 9MH.
z, is sampled and multiplied by 8 bits, and the other two color difference signals (RY) and (B-Y) are each sampled at a sampling frequency of 2.25 MHz and multiplied by 8 bits. Specified and hanged. The digital luminance signal has 456 sample points (pixels) per scanning line, and has 572 effective scanning lines for one frame.

'', one digital luminance signal and two digital color difference signals are input into a memory circuit (not shown) 111,
Furthermore, in response to a readout control signal of a predetermined frequency, the digital luminance signal t is read out at a sampling frequency of 882, z,ffJ with 8 bits, and 2FIl! The digital color difference signals each have a sampling frequency of 88.2k)-1z.

A switching circuit (not shown) is read out with 8 bits of hanging number.
is applied to This switching circuit is supplied with a separately generated header signal with a sampling frequency of 44.1 kHz and a 16-bit signal J3, and switches these input digital signals in a predetermined order. A digital video signal for one field in the signal format shown in FIG. 3 is generated and recorded on the digital record 1 shown in FIG. 2.

In FIG. 3, the digital video signal for one field has 143 words of digital luminance signals Y1 to Y456 degrees and digital color difference signals (R-Y)1 to ('')114, assuming that one word is 16 bits.

(B-Y) ~ (B-Y) and a total of 684 header signals H"H684 of 6 words each synthesized at the beginning position of each of these signals are synthesized in time series, respectively, The digital signal has a total of 101,916 words.1 transmitted next to the header signal H1 shown in FIG.
The 43-word digital luminance signal Y1 indicates a total of 286 pixel data groups in the first field, for example, as indicated by diagonal lines in the first vertical column on the screen in FIG. Two pieces of pixel data are arranged in the lower 8 bits. Also, the header signal (1 transmitted after -12)
The digital luminance signal Y2 of the /I3 word indicates, for example, a group of 286 pixel data of the word of the second field, as shown by diagonal lines in FIG. 2 in the second vertical column from the left on the screen.
Similarly to the above, two pieces of pixel data are arranged in the upper eight bits of one word. Further, the digital luminance signal Y3 following the header signal H3 is the signal 2 of the first field in the third vertical column.
86 pixel data group, header = next digital luminance signal of z4 = y4 is the total of 2 in the 2nd field of the 4th vertical column
It shows a group of 86 pixel data, and the digital luminance signal Y5 next to the header signal H7 is the it 286 pixel data l! of the first field in the fifth vertical column. ■ Shows.

Furthermore, (RY) 1 following the header @H indicates a group of 286 pixel data of the first field, for example, in the first vertical column at the far left on the screen of the first digital color difference signal,
The next (B-Y) 1 of the header signal H6 is a total of 286 pixel data of, for example, the first field in the first vertical column at the far left on the screen of the second digital color difference signal! I accept the i-cho. In this way, a total of six pixel data groups, ie, four columns of pixel data groups in the vertical direction of the digital luminance signal and one column of pixel data groups in the vertical direction of the two types of digital color difference signals, are taken as one rank, and this unit is The combo-neshimi-signified signal, which is in a signal format that is transmitted chronologically at the corners, is the pixel data l! of the odd-numbered columns. For Y, the pixel data group of the first field is transmitted, and for the even-numbered column, the pixel data group of the second field is transmitted and recorded in the digital recorder 1.

Next, the signal format of the header signals 1''1 to H684 will be explained with reference to FIG. Header signal 1-11~
``Each of 684 consists of 6 words.In Figure 4,
The vertical direction shows the bit arrangement, the upper side shows MS[3 (Most Significant Bit), the T side shows LSB (Least Significant Bit ~), and the horizontal direction shows words, which is the same as in Figure 3. be. The first word of the header signal contains all 15 bits, not 5YNC.
1" synchronization signal and rlP/Σ" on the LSB1 bit.
The transmission channel code shown is placed. ±4CI 2 bits of the second word are the image supplementary rule identification code indicated by rMODEJ, upper A ◇3rd bit to 5th bit
Pitsu 1 ~ is the special effect code rs, EJ, and the next 3 Pitsu 1
~ is the two-species identification code rP, G, J, 9th bit "1"
" is a binary number "1", the 10th bit is the image information amount identification code, the 11th bit is the screen transmission identification code, and the 12th bit is the screen transmission identification code.
The 1st bit is the write designation code code rB19WJ, the 13th bit is the read designation code 1: rB19RJ, and the code from the 14th bit to the 16th bit (LSB) is 1.
The 3 bits are the missing row discrimination codes rB2 to BOJ.

Address code rB3 to 81 of the upper 8 bits ΔDla of the third word draw and the upper 8 bits ΔD2a of the fourth word
8'' indicates the address of the memory where the upper 8 bits of pixel data of the first word of the video signal part in the 625-scanning-line tree system is stored, and the 1ζ of the third and fourth words is stored. The address code r83-818 of the highest 8 bits AD1b and AD2b indicates the address of the memory in the 525 scanning line system. Further, the fifth and sixth words of header No. 18 are two spare words, and are normally all rOJ.

A total of 4 bits, including the 1-bit transmission channel code IP/Σr and the 3-bit image type identification codes P and G, are used as a screen identification code. Addressing of the second playback device cannot be performed.

The write designation code rB19WJ specifies reading of two memories in one playback device, which will be described later. Instructs to write pixel data of a video signal. Also, read specification code rB1
9RJ specifies reading of the above two memories, and when 1inrOJ (or "1"), 1° is shown in Fig. 2, which instructs to read pixel data from the first (or second) memory. To explain again, 2-channel analog audio signals are input to input terminals 6 and 7 separately, a start signal is input to input terminal 8, and an analog audio signal is input to input terminal 9. A cue signal is received each time the music program of the signal switches from a previous music program to another music program. On the disk 14, which will be described later, a digital signal with a sampling frequency of 44.1 kHz and a number of 16 bits of data is stored in one track for 4 channels in time series as the amount of information for 1 channel. Assuming that the above two-channel analog audio signal is to be recorded, each channel is sampled by the AD converter 10 at a sampling frequency of 44.1 K)]2, and is converted into a 16-bit digital signal. Audio signal (P
CM audio signal) and supplied to the signal processing circuit 5. Further, a control signal generated by the control signal generation circuit 11 is supplied to the signal processing circuit 5. The control signal is the pickup re/I element control (random access)
etc. used for such purposes.

The signal processing circuit 5 receives a digital video signal in the signal format A-format as shown in FIG. 3 from the specified code conversion device 5, and
A 2-desennel digital audio signal and a control signal are respectively supplied from the AD converter 10, and these parallel data are rearranged into direct IJIJ data.
The digital signal of each channel is divided into predetermined sections, and the signals are interleaved and time-division multiplexed.

In addition, there is an error code correction signal, an error code detection signal, and a synchronization signal bit 1 indicating the start of a block (frame).
A] is added to generate a recording signal.

FIG. 5 schematically shows an example of one block (one frame) of the recording signal generated as a result of signal processing by the signal processing circuit 5, and one block is composed of 130 bits. 5YNC indicates the multiplexing position of the 8-bit fixed pattern synchronization signal indicating the beginning of the block, and Ch-1, Ch-
2 indicates the digital audio signals of the two channels, and ch-3, 0 to 1-4 indicate the multiplexing positions of 16 bits and 1 word of the digital video signals of the two channels. Further, P and Q shown in FIG. 6 are each 16-bit error code correction signals. Further, CRC is a 23-bit error code detection signal, Adr is a control signal used for random address, etc., and U is a user's bit. Fifth
One block of signals (not shown in the figure) is composed of 130 bits from 5YNC to U, and the digital signals are synthesized in block units at the same frequency as the sampling frequency of the digital audio signal, 44.1kHz, and are synthesized in time series. The signal is transmitted and recorded on the disk 1 via a modulation circuit 12 and a recording device 13 using a laser beam.

This disk 1 records digital audio signals and digital video signals constituting one block in the signal format shown in FIG. A disk is placed approximately in the middle between the spiral main track and the center line of each track of the adjacent main rack.
A sub-recorder in which burst-shaped first and second tracking control reference signals f and fP2 of a single frequency, which are in a band lower than the band of the frequency modulated wave, are recorded by an intermittent bit string alternately every rotation period. Further, a third tracking control reference signal fP3 is recorded in the main track for the switching connection portion PIP2 of f1 and f2. Further, this disk 11 is not formed with a tracking guide on the playback side, and has an electrode function.

Further, to explain the disk 1 shown in the first diagram, one digital video signal is recorded on the track tla"' tlb for a still image displayed on the first screen among the images A consisting of 16 screens, Similarly, 1-rack t2a
Digital video signals of still images A2 to A16 to be displayed on the second to 16th screens, respectively, of the images are recorded in t16b.

The screen identification codes of the header signals of the tracks tla to t1b (i.e. code r1P/2PJ and code rP
, GJ) is rooooJ, which instructs the first playback device that displays the first screen, the write designation code rB19WJ is set to "1", and the read designation code r
B19Rj is set to "0". Similarly, the screen identification codes of the header signals corresponding to the still images of the second to 16th screens are respectively set as tyor0001J to r1111J to instruct the second to 16th reproducing devices, respectively. Both write designation codes rB19WJ are "1"
and the respective read designation codes rB1')RJ are both set to "0".

Also, the 1-rack t1 in which the still image of the 16th screen was recorded
In the track t17 following 6b, 16 header signals without component encoded data are continuously recorded. The screen identification codes of these 16 header signals h1 to h1G are ro000J to r1111J, respectively, and specify the first to sixteenth reproduction devices, respectively. Further, the write designation codes rB19WJ of these header signals are both rOJ, and the respective read designation codes rB19RJ are both "1".

In addition, in this embodiment, for convenience, still images of the first screen are recorded in tracks tIa to t1b, and still images of both sides of the second screen are recorded in tracks t2a to t2b, but the connecting point of each still image and f
There is no need to match the track switching point, which is one rotation period of the disk, starting from the P3 recording position.

Next, an example of a first reproducing apparatus for reproducing the disc of the present invention will be explained with reference to FIG. In the figure, the disk 1 is rotated at a predetermined number of rotations, and a scanning needle 29 called a sensor
is slidingly scanned. By detecting a change in capacitance between the electrode of the scanner 129 and the pit row recorded on the disk 1, the previously recorded signal is reproduced and output by the pickup circuit 30 in a known manner. The output reproduction signal of the pickup circuit 30 is demodulated by an FM demodulator 31, and the demodulated digital signal extracted here is supplied to a decoder 33, and is also supplied from a terminal 32 to the decoders of the second and sixteenth reproduction devices. Ru. The decoder 33 converts the demodulated digital signal into a time-series composite signal consisting of synchronizing signal bits 5YNC1, 2 channels of digital audio signals, 2 channels of digital video signals, an error code correction signal, and the like. Based on this violation, the beginning of the signal block is detected based on the synchronization signal bit 5YNC, the serial signal is converted into a parallel signal, and further error detection is performed. Only when an error is detected, the error signal is corrected and restored using the error code correction signal. In this way, the digital signals of each of the two channels are corrected and restored as necessary, and the signal arrangement is returned to its original order before interleaving. The audio signal is converted into an analog audio signal by a DA converter in the decoder 11 and then outputted to output terminals 34 and 35 for each person. on the other hand,
The digital video signals of the two channels are reproduced in time series, combined into a predetermined signal format in which a header signal is added for each vertical column of pixel data group on the screen, and then supplied to the scanning line number conversion circuit 36. , where the number of scanning lines is 52
Converted to 5-piece method. The output pixel data of the scanning line number conversion circuit 36 is supplied by a switch circuit 37 to a first or second frame memory (hereinafter simply referred to as "memory") 713 or 44, which forms a main part of the apparatus of the present invention.

Further, the digital video signals sequentially extracted from the decoder 33 in time series are also supplied to a synchronization signal detection circuit 38, a header signal detection circuit 40, and a memory write controller 41, respectively. The synchronization signal detection circuit 38 detects the synchronization signal in the header signal and sends the detection signal to the control circuit 39.
supply to

Further, the header signal detection circuit 40 selectively reproduces each code and address signal other than the synchronization signal in the header signal and supplies it to the control circuit 39.

The control circuit 39 is supplied with the synchronization signal detection signal and each code detection signal of the header signal, discriminates and decodes these input signals, and generates a header signal whose screen identification code designating the first playback device is rooooJ. The scanning line number conversion circuit 36, the switch circuit 37 . Memory write controller 41. Memory read controller and synchronization signal generation circuit 45. Controls the switching circuit 46@.

The memory write controller 41 writes pixel data in the digital video signal supplied to the memory 43 or 4/1 to a predetermined address based on the address signal in the header signal. The switch circuit 37 receives the code rB19WJ by a control signal from the control circuit 39 based on the memory 13 writing designation code rB19WJ in the header signal.
When the first shift is rOJ, terminal a is selected, and when it is "1", terminal A is selected. By this, 21
- Pixel data is supplied to the first memory 43 or second memory 44 specified by rB19WJ. The memories 43 and 44 read out one frame of pixel data based on the read control signal from the memory read controller and synchronization signal generation circuit 45, and also correct jitter associated with reproduction. The pixel data read from each of the memories 43 and 44 is supplied to the switching circuit 46.

The switching circuit 46 takes out the output pixel data from the memory 43 when the value of the code rB19RJ is "0", and reads the output pixel data from the memory 43 when the value of the code rB19RJ is "1", according to a control signal from the control circuit 39 based on the memory read designation code rB19RJ in the header signal. Switch to extract the output pixel data of
The extracted pixel data is supplied to the D/A converter 47.

An analog video signal obtained by D/A conversion by the D/A converter 47 is supplied to an encoder 48. This analog video signal is added with horizontal and vertical synchronization signals supplied from the memory read controller and Domei signal generation circuit 45, and is converted into a standard television system television signal 8 and outputted from an output terminal 49. .

The remaining second to sixteenth regeneration devices each have the same configuration as the first regeneration device shown in the sixth figure, and the terminal 32 of the first regeneration device
The demodulated digital signals output from the decoders are supplied to the respective decoders, which operate in the same manner as the apparatus shown in FIG. However, the control circuit of each reproducing apparatus performs control according to each code of the header signal having a screen identification code having a value specifying the respective reproducing apparatus.

As a result, when the disc 1 shown in the first diagram is played,
Still image A4. △2. A3. ..., A16 digital video signal, followed by a header signal h1゜h2 . . . without component encoded data. h3. ...,
h16 are obtained in the order shown in FIG. 7(A). As shown in FIG. 7(B), the write designation code rB19WJ is "1" for tracks tla to tIGb, so the still image A1
The pixel data of .about..DELTA.16 are captured in the second memory of the first to sixteenth reproducing devices according to the screen identification code shown in FIG. 7(D). Now, regarding the first reproducing device, as shown in FIG. 7(E), the pixel data of the previously written still image When the still image B1 to be displayed specifies this memory 43, this ili? 11) Picture B1
pixel data is written. The memory 44 is shown in FIG.
), the pixel data of the still image A1 is inserted. The read designation code rB19RJ is shown in Figure 7 (C
), the tracks tla to t16. is rOJ, and becomes "1" from track t17 onwards. Therefore, the display images displayed on the 1st to 16th screens will be as shown in FIG. 7 (G
), the still image X that had been displayed up to that point is instantly cut to the still image A. The time required to reproduce the above header signals h to h16 is extremely short,
To the human eye, the first screen to the 16th screen are viewed as r:&H images that were simultaneously cut and manipulated.

Of course, it is also possible to cut several of the 16 screens at the same time in the same way.

In addition, in a disc in which a digital track on which the above-mentioned digital audio signal is recorded and an analog recording rack 1-rack on which a modulated wave signal obtained by modulating a carrier wave with an analog information signal such as a composite video signal is recorded. Also, a still image (i) should be displayed on the digital track that precedes the analog track after playback of the analog track.
The code rB19WJ is "1" for the digital video signal.
.

The code rB19RJ is recorded together with the rOJ header signal, and the code rB19WJ is recorded at the beginning of the next digital track that is successively played back from analog 1 to easy.
By recording an intermediate type of header signal without component encoded data, in which the code rB19RJ is "0" and the code rB19RJ is "1", a still image (1) is displayed at the same time as the digital track following the analog track is played. Is possible. This allows separate still images to be displayed before and after the analog track, making it easier to create video software.

In addition, instead of the above-mentioned analog track, it is possible to use a digital audio disc which is a digital track, but does not contain still image information but records other information such as a computer program or compressed audio or characters, and in the same manner as above, other information may be recorded. It goes without saying that different still images can be displayed before and after.

Effects of the Invention As described above, the information signal recording disk according to the present invention is capable of cutting a displayed still image at the time of reproducing a header signal that does not include still image information. Even when displaying a still image, it is possible to cut multiple sides of the image at the same time, and
Even on discs with a mix of digital tracks and analog tracks, or discs with still image information and other information such as computer programs, separate still images can be displayed before and after analog 1 to rack or other information, and the video It has features such as ease of software production.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a schematic track pattern of an embodiment of the present invention, FIG. 2 is a block system diagram of an example of a recording system for recording a disc of the present invention, and FIG. 3 is a signal diagram of an example of a digital video signal. The format is not shown, Figure 4 is Heladder 13
FIG. 5 is a diagram showing an example of the signal format of one block of signals recorded on the gamma digital recording track of the disc. FIG. 6 is a schematic block system of an example of a playback device. 7 are diagrams for explaining the reproduction state of the disc shown in the first diagram. DESCRIPTION OF SYMBOLS 1... Information signal recording disk (disc), 4... Digital recorder, 5... Signal processing circuit, 39... Control circuit, 40... Header signal detection circuit, IP/2P
. P, Q...Double-sided identification code, B19W...Reading specification code, B19R...Reading specification code. Patent applicant: Victor Japan Co., Ltd. Figure 1 Figure 6

Claims (1)

[Claims] Still image information records at least a digital video signal accompanied by a header signal, and writing specifies in which memory of at least two screen memories of the playback device the still image information is to be written in the header signal. In an information signal recording disk provided with a specification code and a readout specification code that specifies from which memory still image information is to be read, any still image information is specified to a memory in which the write specification code and the readout specification code are different. A write designation code and a read designation code of the header signal accompanying the arbitrary still image information are recorded together with the header signal, and a different memory is written at a position to be played after the arbitrary still image information is played back. 1. An information signal recording disc characterized in that a header signal having a designated write designation code and a read designation code and no image information is recorded.